
Description: TkGate is an open-source digital logic circuit and schematic editor. It allows users to draw logic gate diagrams and simulate their operation. It has features for hierarchical design and is aimed primarily at education and prototyping.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Logisim is an open-source digital logic circuit simulator designed for educational purposes. It allows users to design and simulate logic circuits consisting of gates, wires, inputs and outputs.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API